Pneumatic hub.



C. E. DE BOOS.

PNBUMATIG BUB.

APPLIoATIoN FILED 1110.2. 1911.

1,019,591. 1 Patented Mar.5,1912.

C. E. DE BOUS.

PNBUMATIG HUB.

APrLIoATIon FILED AUG. 2. 1911 Patented Mar.5,191'2.

2 SHEETS-SHEET 2,

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i Boos, a subect of thel King of Great Britain.

STATES PATENT OFFICE..

i cHARLs EDWARD ne Boos, or 'rar/roms.,` NEW soU'rHrwA'LEs, AUSTRALIA.

rNEUi/rarrc Huis.

1 v Specification of Letters Patent.

. Application led August 2, 1911. Serial No. 641,945.

. Patented Mar. 5,1912.

To-allwlwm'ftt may concern: l Y I Be it known that I, CHARLES lEnv/,Aun nn and Irelan and residin at Temora, in the `State of New South Wa es, Commonwealth of- Australia, have invented new and usefulV Improvementsin PneumaticHubs, of which V, lthe following is a specification. '4

' l This invention relates to `means for providing resiliency in wheels for use on motor vehicles in substitution for the, pneumatic tired'wheels now generally used.

. The immediate purpose of the invention in giving effect to the aboveobject is to provide a hub for a wheel of such a vehicle,

-whichwill in itself'ailord such resiliency as p to obviate the use 'of the" pneumatic ,tire with its attendant disadvantages.

. In carrying my invention into effect I propose to construct a hub in two mam conf'centric parts and insert between'them-an annular pneumatic ring protected by a suitable cover also constructed in two parts and secured in such a' manner that the torsional driving strain is communicated thereby from theA inner to the outer .hub member, 4while side thrust is resisted by suitable side plates so constructed and arranged as to permit of radial movement ofthe outer hub member relative" to the axle. C

In order to indicate the practical application of this invention referencel will now be made tothe accompanying drawings which form part of this co'm lete specification and in which z-Figurel siiows a'perspective external View of the hub complete; Fig. 2 is a cross sectional elevation of the same; Fig. 3 is a cro'ss sectional eleva-tion of the same as a plied to one of the free or non-driving w eels of a vehicle; Fig. 4 is a part sectional view showing the arran ement of the valve ig. 5 is a cross secfor inilating the tube;

The same numerals are used to indicate corresponding parts in all the views, butI will refer firstly to Figs. 1 and 2.' The inner hub member or bush 6 is secured to the `tapered end 'l of the driving axle by suitable or, as shown' in the to, by forming the tapered portion o f the axle 'with square section and boring the bush correspondingly.

means such as'keyin The bush is provided with an annular flange 8, and the 4outer member 9, which consists of an annular ring (hereinafter referred to as 13. 13.- of which are gripped between the .corresponding annular flanges 14. 14. of the inner and outer rim pieces l15. 15. The face of one of the lnner rim' flanges bears yagainst the flange 8 and that Aof one of the outer# rims against the flange 10, and the two pairs of rim fianges with the cover flanges between them are secured to the flanges 8 and 10 by bolts 16. 16. I have found that the method described of gri ping the cover flanges between the rim an es affords an efficient and simplemeans o transmitting the torsional strain from the inner bush 6 to the outer ring 9 provided the cover is made of material or a combination of` materials suiiciently strong for the purpose. Owing to its great tensile strength and resistance to any tearing force green hide is emi' nently suitable for the particular purpose. To resist side thrust tending to distort the hub and to protect the-inner parts, duplex side plates are provided upon each side ofV the hub. Each set of side plates consists of an annular plate 17 attached to one of the outer rim members 15, and a central plate 18 bearing against the outside of the former and attached to the inner ring member and to the central bush or the axle. This arrangementA permits of compression of the pneumatic tube, and by securing' the center plate to the bush or under the axle cap 19 on the outside of 'the hub, or against lthe. axle shoulder 2() on the inside, prevents lateral distortion of the hub. In the case of driving wheels the brake sheave or drum may conveniently be affixed to.or made in'- y tegral with the central side plate on the insi e ofthe hub as'shown in Fig. 2 at 27.

Referring to Fig. 3 it will be seen that the journal and the bush V6 are provided with ball races to accommodate the ball bearings y 21. This arrangement is suitable for free wheels. In the case o f free wheels the side plates on both the inside and outside of the lrunning .wheels 'as distinct from drivingl 105 ub must be`clear ofthe 'non-rotating axle,

and if-desiredthe outside center plate may be dished at 22 to cover the ca and exclude dust from the bearings. For t e purpose of,

securing this plate to the center bush by screws, the latter may be thickened in places i ai `by bosses' such as. 23 to provide sullicient and further descriptionithereof is considered unnecessary.

The arrangement of the vinflating valve is shown in Fig. 4, the valve casing 26 being secured to the pneumatic' tube in the usual Way, passes between the flanges 14. 14., the ooverflanges 13.13. being veut away at that point t0 so permit. I do not however confine myself to this arrangement of the valve asthe location and disposition thereof may be altered as may be'deemed advisable under varying circumstances.

The .outer ring 9 is shown provided lWith external flanges 25. 25. for securing radial or tangential tension spokes. e

' 'What I claim and desire to secure by Letters-Patent is 1. A pneumatic hub comprising in combination, a central hub bush, annular flanges projecting therefrom, an annular pneumatic cushion surrounding said bush, a tivo-part sheath or cover for said cushion, a two-part land the parts of said outer ring -seat together, substantially as described.

2. A pneumatic hub comprising in combination, a central hub bush, annular flanges proj ectingvtherefrom, an annular pneumatic ring cushion surrounding said bush, a twopart sheath. or cover for said cushion provided with flanges, a two-part inner ring seat for said cushion anchored to said annular flanges of said bush, means securing the inner ring seatand the 'flanges of said cover to said bush, a two-part outer ring seat provided withflanges engaging the flanges or' said bush, and means -for securing the flanges of the sheath and the parts of said outer ring seat together, substantially as described. f

Signed at Sydney, New-South lVales, this 4th day of-July 1911.

eHaRLEs EDWARD DE Boos.

Vitnesses 7351. NEWTON, Cr-rAs. HATroN. 

